US5137446A
Expired / Lapsed
US
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Orthodontic implement controllable of correction force
Assignee: Tokin Corp
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Filing: 1991-06-07
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Granted: 1992-08-11
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Expires: 2011-06-07
Abstract
Abstract An orthodontic teeth alignment correction wire element made of an alloy represented by the chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, or an alloy represented by the chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25-2.0, and exhibits pseudoelasticity at the natural human body temperature. The wire has different recovery forces at different sections therealong by heat treating those sections at controlled temperatures of 400°-600° C. and for controlled time periods of 10-150 minutes and thereafter reheat treating them. An orthodontic coil is made of each of the above-described alloy wires for correction of mismatch of the upper and the lower jaws.
Inventors
- 👤 Kiyoshi Yamauchi
- 👤 Naoharu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/20; A61C2201/00; A61C2201/007
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
An orthodontic implement for use in correction of an irregular and abnormal alignment of teeth which comprises a wire of an alloy represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 2
Dependent Claim
78 words
An orthodontic implement for use in correction of an irregular and abnormal alignment of teeth which comprises a wire of an alloy represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 3
Dependent Claim
98 words
An orthodontic implement for use in correction of an irregular and abnormal alignment of teeth which comprises a wire of an alloy represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25-2.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 4
Dependent Claim
98 words
An orthodontic implement for use in correction of an irregular and abnormal alignment of teeth which comprises a wire of an alloy represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25-2.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 5
Dependent Claim
63 words
An orthodontic wire element for use in correction of an irregular and abnormal alignment of teeth which is made of an alloy represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being different in its shape recovery stress at different sections therealong.
Claim 6
Dependent Claim
63 words
An orthodontic wire element for use in correction of an irregular and abnormal alignment of teeth which is made of an alloy represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being different in its shape recovery stress at different sections therealong.
Claim 7
Dependent Claim
84 words
An orthodontic wire element for use in correction of an irregular and abnormal alignment of teeth which is made of an alloy represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25- 2.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being different in its shape recovery stress at different sections therealong.
Claim 8
Dependent Claim
84 words
An orthodontic wire element for use in correction of an irregular and abnormal alignment of teeth which is made of an alloy represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25- 2.0, said wire having a pseudoelasticity at the natural human body temperature, said pseudoelasticity being different in its shape recovery stress at different sections therealong.
Claim 9
Dependent Claim
89 words
An orthodontic implement for use in correction of mismatch between the upper and the lower jaws of a patient which comprises a coil element made of an alloy wire represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a high durability and having pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 10
Dependent Claim
89 words
An orthodontic implement for use in correction of mismatch between the upper and the lower jaws of a patient which comprises a coil element made of an alloy wire represented by a chemical formula of Ti a Ni b-c C c , wherein a+b=100, b=50-52, c=0.25-5.0, said wire having a high durability and having pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 11
Dependent Claim
109 words
An orthodontic implement for use in correction of mismatch between the upper and the lower jaws of a patient which comprises a coil element made of an alloy wire represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25-2.0, said wire having high durability and pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating said wire at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
Claim 12
Dependent Claim
109 words
An orthodontic implement for use in correction of mismatch between the upper and the lower jaws of a patient which comprises a coil element made of an alloy wire represented by a chemical formula of Ti a Ni b-c-d C c X d , wherein X is at least one element selected from V, Cr, Fe, Nb, Ta, W, and Al, wherein a+b=100, b=50-52, c=0.25-5.0, d=0.25-2.0, said wire having high durability and pseudoelasticity at the natural human body temperature, said pseudoelasticity being controllable in its shape recovery stress by heat treating said wire at a controlled temperature of 400°-600° C. and for a controlled time period of 10-150 minutes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |